Heron Bay Weather Forecast

    • 54
    • 61

    Rain Likely

    • 49
    • 63

    Rain Likely

    • 51
    • 61

    Slight Chance Rain

    • 55
    • 61

    Rain Likely

    • 55
    • 61

    Rain Likely

    • 54
    • 62

    Rain Likely

    • 51
    • 60

    Rain Likely

Today 16 Dec San Francisco Bay Shoreline

Mostly cloudy. A slight chance of rain. Highs in the lower 60s. Light Winds.

Tonight 16 Dec San Francisco Bay Shoreline

Patchy fog. A chance of rain in the evening. Rain likely after midnight. Lows in the mid 50s. South Winds up to 5 Mph.

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Heron Bay Temperature Statistics

December Temperature

Hayward, Hayward Air Terminal (3.1 miles)

  • Lowest 3 December, 2025

    41 °F

  • Average December

    48 °F

  • Highest 3 December, 2025

    64.9 °F

Climate (2020–Present)

Hayward, Hayward Air Terminal (3.1 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    59.2 °F

  • Average High 2020–2025

    68.8 °F
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